QTR-Quadtone RIP

hi all

I know this is a little off-topic, but I think some people here would
be able to answer my question.

I print my fine art b/w prints to 'hann photo rag'. I'm trying to
source a high quality matt to accompany my images in a classic black
alu gallery frame.

I'm struggling to find a quality matt that does my prints justice...
the samples in my local framers are just horrible (low qulaity, many
with a 'machine' texture)... I want a simple high quality bright white
archival matt with a very subtle 'natural' texture,

does anyone have any suggestions... I'm UK based if that helps

thanks in advance

steve